The weather in October in Lanzarote is still excellent with an average temperature of 23 Celsius. The daily hours of sunshine will remain at 8 and the sea temperature will stay at 22 Celsius. October sees two or three days rainfall on average but the precipitation levels are minimum during this month.
In 1931, Secretary of the Interior Ray Lyman Wilbur announced that a 726.4-foot high dam would be built in Black Canyon rather than Boulder Canyon due to a fault at the upper end of Boulder Canyon and greater storage capacity in Las Vegas Wash. It would be named Hoover Dam. (But when Hoover lost the presidency to Franklin D. Roosevelt in 1932 because people blamed him for the Great Depression, the dam was officially renamed Boulder Dam in 1933.
Hoover Dam was the first man-made structure to exceed the masonry mass of the Great Pyramid of Giza. The dam contains enough concrete to pave a strip 16 feet wide and 8 inches thick from San Francisco to New York City. More than 5 million barrels of Portland cement and 4.5 million cubic yards of aggregate went into the dam.